This is a place where a newbie can read posts created by satoshi, gmaxwell, Gavin Andresen, and many more bitcoin guru.
+ This is a place where community is too strong. You can get quality answer, warnings against scam all for free without any annoying notification and subscription. There is some problem with spam but with time you understand what to read and what to weed out.
At first, 10 posts a week seems like nothing. But it will hinder your further learning development.
Join the campaign that suit the posting habit of yours. There is no force by forum to complete your bounty obligation (Forum is not going to ban or red trust you if you do not write 10 post) so even you join bounty do not get pressurized by it and continue on your learning path.